Dietary inflammatory index scores are associated with atherogenic risk in Brazilian schoolchildren.

OBJECTIVE: To investigate the association between the Children's Dietary Inflammatory Index (C-DIITM) scores and atherogenic risk in Brazilian schoolchildren. DESIGN: A cross-sectional representative study. Three 24-h dietary recalls were performed to evaluate food consumption and to calculate C-DII scores. Blood samples were collected for the lipid profile analysis (serum total cholesterol (TC), HDL-cholesterol, LDL-cholesterol, VLDL-cholesterol and triglycerides (TAG)) and to determine atherogenic indexes (Castelli risk indexes I and II, lipoprotein combined index (LCI), and atherogenic index of plasma and atherogenic coefficient (AC)). A semi-structured questionnaire was used to obtain sociodemographic characteristics and screen time. Body fat was assessed by dual-energy X-ray absorptiometry. We compared the distributions of outcomes by C-DII categories using multivariable linear regression. SETTING: Viçosa, Minas Gerais, Brazil. PARTICIPANTS: Three hundred seventy-eight children between the ages of 8 and 9 years. RESULTS: The mean C-DII score was 0·60 ± 0·94, and the prevalence of dyslipidaemia was 70 %. Children with hypercholesterolaemia and hypertriglyceridaemia had higher C-DII scores. The C-DII was directly associated with atherogenic risk. Every 1 sd of C-DII was associated with a 0·07 (0·01, 0·13), 1·94 (0·20, 3·67), 0·06 (0·002, 0·12) and 0·12 (0·02, 0·22) units higher TC:HDL cholesterol ratio, LCI, AC and accumulation of altered dyslipidaemia markers (high TC + high LDL-cholesterol + high TAG + low HDL-cholesterol), respectively. CONCLUSIONS: Dietary inflammatory potential, as estimated by the C-DII, is directly associated with atherogenic risk in Brazilian schoolchildren. This results reinforce the importance of effective nutritional policies to promote healthy eating habits and improve children's lipid profiles.

The TyG index cutoff point and its association with body adiposity and lifestyle in children / Ponto de corte do índice TyG e sua associação com a adiposidade corporal e estilo de vida em crianças

Abstract Objective: To investigate the factors associated with insulin resistance in children aged 4-7 years, and to identify the cutoff point of the triglyceride-glucose index for the prediction of insulin resistance in this population. Methods: A cross-sectional study was conducted with 403 children from a retrospective cohort. Insulin resistance was also evaluated in a sub-sample using the HOMA index. Four indicators of body adiposity were assessed: body mass index, waist-to-height ratio, and the percentages of total and central body fat. Food habits were evaluated by the identification of dietary patterns, using principal component analysis. Information was also collected on lifestyle, socioeconomic status, and breastfeeding time. Results: The median index observed in the sample was 7.77, which did not differ between the genders. The shorter the time spent in active activities, the higher the triglyceride-glucose value; and increase in the values of body adiposity indicators was positively associated with triglyceride-glucose. The cutoff point with the best balance between sensitivity and specificity values was 7.88 (AUC = 0.63, 95% CI: 0.51-0.74). Conclusion: The present study identified that total and central body adiposity and shorter time spent in lively activities was positively associated with insulin resistance, evaluated through the triglyceride-glucose index. The cutoff point of 7.88 may be used in this population for insulin resistance risk screening, but caution is required when using it in other populations.

Resumo Objetivo: Investigar os fatores associados à resistência à insulina em crianças de 4 a 7 anos, e identificar o ponto de corte do índice triglicerídeos-glicemia (TyG) para predição da RI nessa população. Métodos: Estudo transversal, com 403 crianças pertencentes a uma coorte retrospectiva. A resistência à insulina foi avaliada pelo índice triglicerídeos-glicemia e também pelo índice HOMA, este em uma subamostra. Avaliou-se quatro indicadores de adiposidade corporal: o índice de massa corporal, a relação cintura-estatura e os percentuais de gordura corporal total e central. O hábito alimentar foi avaliado pela identificação dos padrões alimentares, utilizando-se a análise de componentes principais. Foram coletadas também informações sobre estilo de vida, condição socioeconômica e tempo de aleitamento materno. Resultados: A mediana observada do índice triglicerídeos-glicemia na amostra foi de 7,77 e não diferiu entre os sexos. Quanto menor o tempo diário em atividades ativas, maior o valor de triglicerídeos-glicemia; e o aumento nos valores dos indicadores de adiposidade corporal associou-se positivamente com o triglicerídeos-glicemia. O ponto de corte com melhor equilíbrio entre os valores de sensibilidade e especificidade foi o de 7,88 (AUC = 0,63; IC 95% 0,51 - 0,74). Conclusão: O presente estudo identificou que a adiposidade corporal total e central e o menor tempo diário em atividades ativas associou-se positivamente com a resistência à insulina, avaliada pelo índice triglicerídeos-glicemia. O ponto de corte de 7,88 pode ser utilizado nessa população para triagem do risco de resistência à insulina, mas é necessário cautela na sua utilização em outras populações.

The TyG index cutoff point and its association with body adiposity and lifestyle in children.

OBJECTIVE: To investigate the factors associated with insulin resistance in children aged 4-7 years, and to identify the cutoff point of the triglyceride-glucose index for the prediction of insulin resistance in this population. METHODS: A cross-sectional study was conducted with 403 children from a retrospective cohort. Insulin resistance was also evaluated in a sub-sample using the HOMA index. Four indicators of body adiposity were assessed: body mass index, waist-to-height ratio, and the percentages of total and central body fat. Food habits were evaluated by the identification of dietary patterns, using principal component analysis. Information was also collected on lifestyle, socioeconomic status, and breastfeeding time. RESULTS: The median index observed in the sample was 7.77, which did not differ between the genders. The shorter the time spent in active activities, the higher the triglyceride-glucose value; and increase in the values of body adiposity indicators was positively associated with triglyceride-glucose. The cutoff point with the best balance between sensitivity and specificity values was 7.88 (AUC=0.63, 95% CI: 0.51-0.74). CONCLUSION: The present study identified that total and central body adiposity and shorter time spent in lively activities was positively associated with insulin resistance, evaluated through the triglyceride-glucose index. The cutoff point of 7.88 may be used in this population for insulin resistance risk screening, but caution is required when using it in other populations.